Eaton FNQ-R-4 Fuse - Class CC, 200 kAIC, RoHS
Part Number: FNQ-R-4
Quick Summary
FNQ-R-4 fuse delivers current-limiting protection for line protection and small control circuits. When uptime matters, unexpected fuse trips and slow replacements can derail automation lines, driving costly downtime. This device is RoHS compliant and CE marked, with a Class CC current-limiting design and a 200 kAIC interrupt rating to meet global standards. For engineers and procurement teams, the FNQ-R-4’s compact form, ferrule-end connections, and time-delay performance translate to easier installation, fewer spare parts, and predictable protection for mixed electrical cabinets and industrial controls.
Product Information
Extended Description
FNQ-R-4 Eaton: Eaton Bussmann Series Class CC fuse, FNQ, time-delay, dual-element current limiting fuse, 4 A, rejection style fuse, interrupting rating of 200kA at 600Vac
Product Name
Eaton Bussmann series FNQ-R fuse
Catalog Number
FNQ-R-4
UPC
051712147095
EAN
5027590060363
Product Length/Depth
1.5 in
Product Height
0.41 in
Product Width
0.41 in
Product Weight
0.15 lb
Warranty
Not Applicable
Compliances
RoHS Compliant CE Marked
Type
Current-limiting high inrush time-delay fuse
Special features
Rejection style
Application
Line protection, small control transformers, industrial control, branch circuits
Amperage Rating
4 A
Class
Class CC
Interrupt rating
200 kAIC
Fuse indicator
Non-indicating
Connection
Ferrule end x ferrule end
Response time
12 sec at 200%
Material
Melamine tube
Packaging type
Standard
Voltage rating
600 V
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Bussmann series FNQ-R Class CC Fuse Data Sheet No. 1014
Feature: Time-delay, dual-element current-limiting design enables controlled protection during inrush and short-duration surges. Business Impact: Reduces nuisance trips on motors and transformers, improving line availability and extending equipment life. Application: Ideal for line protection, small control transformers, and industrial control circuits where inrush is common. The result is measurable uptime and lower maintenance costs.Feature: Class CC fuse with 200 kAIC interrupt rating delivers high fault-energy handling while protecting downstream devices. Business Impact: Limits energy released during faults, safeguarding wiring, contactors, and power supplies; reduces repair time and replacement costs. Application: Suitable for branch circuits and critical control loops in automation panels.Feature: 4 A, 600 V rating with ferrule-end connections ensures safe, reliable integration into standard control panels. Business Impact: Streamlines installation, minimizes field modification, and supports quick procurement with a known, documented footprint. Application: Common in industrial controls and small control transformer protection.Feature: Rejection style and non-indicating fuse indicator reduce installation errors and simplify panel setup. Business Impact: Enhances installation accuracy in multi-fuse enclosures and lowers return visits for mis-matched fuses. Application: Rejection style helps ensure correct fuse alignment in complex panels.Feature: RoHS compliant and CE marked with standard packaging supports global compliance and easy sourcing. Business Impact: Enables cross-border deployments without re-engineering for regulatory, saving time in procurement and validation. Application: Broad applicability across global manufacturing sites needing compliant protection components.
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FAQs
The FNQ-R-4 is rated for 600 V applications and uses ferrule-end connections, making it compatible with standard control panels, small transformers, and industrial automation loops. Its Class CC, dual-element design provides current-limiting protection with a 200 kAIC interrupt rating, aligning with common US and global equipment protection practices.
The FNQ-R-4 is a time-delay fuse with dual-element construction designed to tolerate short inrush transients without sacrificing protection. It responds with a controlled delay (12 seconds at 200% often cited in datasheets) to allow startup surges while still interrupting faults promptly to protect downstream devices.
Yes. The FNQ-R-4 is explicitly specified for line protection, small control transformers, and industrial control circuits. Its 4 A rating and 600 V capacity make it a reliable choice for protecting branch circuits in automation panels, while its time-delay feature helps accommodate transformer inrush without nuisance trips.
The FNQ-R-4 is RoHS compliant and CE marked, ensuring regulatory alignment for global installations. This compliance supports environmental requirements and market access, particularly in regions with strict electronics waste and safety standards.
The FNQ-R-4’s high interrupt rating and current-limiting design reduce fault energy and equipment damage, lowering repair costs and downtime. Its non-indicating feature minimizes indicator chatter in busy panels, while its rejection-style installation reduces mis-mount errors, improving maintenance efficiency and long-term total cost of ownership.